diff --git a/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirScopeProvider.kt b/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirScopeProvider.kt
index a18c26cdbac..a3050284b5f 100644
--- a/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirScopeProvider.kt
+++ b/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirScopeProvider.kt
@@ -261,7 +261,7 @@ internal class KtFirScopeProvider(
     private fun getFirTypeScope(type: KtFirType): FirTypeScope? = type.coneType.scope(
         firResolveSession.useSiteFirSession,
         getScopeSession(),
-        FakeOverrideTypeCalculator.Forced,
+        CallableCopyTypeCalculator.Forced,
         requiredMembersPhase = FirResolvePhase.STATUS,
     )
 
diff --git a/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/references/FirReferenceResolveHelper.kt b/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/references/FirReferenceResolveHelper.kt
index b0278c2c740..ae65516bc92 100644
--- a/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/references/FirReferenceResolveHelper.kt
+++ b/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/references/FirReferenceResolveHelper.kt
@@ -38,7 +38,7 @@ import org.jetbrains.kotlin.fir.resolve.providers.toSymbol
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.toSymbol
 import org.jetbrains.kotlin.fir.resolve.transformers.FirImportResolveTransformer
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.impl.FirExplicitSimpleImportingScope
 import org.jetbrains.kotlin.fir.scopes.processClassifiersByName
 import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
@@ -264,7 +264,7 @@ internal object FirReferenceResolveHelper {
         val scope = lhs.resolvedType.scope(
             session,
             analysisSession.getScopeSessionFor(analysisSession.useSiteSession),
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         ) ?: return emptyList()
 
diff --git a/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/symbols/KtFirPropertySetterSymbol.kt b/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/symbols/KtFirPropertySetterSymbol.kt
index 75827133e30..f7cdd1828a9 100644
--- a/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/symbols/KtFirPropertySetterSymbol.kt
+++ b/analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/symbols/KtFirPropertySetterSymbol.kt
@@ -28,7 +28,7 @@ import org.jetbrains.kotlin.fir.declarations.impl.FirDefaultPropertyAccessor
 import org.jetbrains.kotlin.fir.declarations.synthetic.FirSyntheticPropertyAccessor
 import org.jetbrains.kotlin.fir.declarations.utils.*
 import org.jetbrains.kotlin.fir.resolve.scope
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.getDirectOverriddenProperties
 import org.jetbrains.kotlin.fir.symbols.impl.FirPropertyAccessorSymbol
 import org.jetbrains.kotlin.name.CallableId
@@ -55,7 +55,7 @@ internal class KtFirPropertySetterSymbol(
             val containingClassScope = firSymbol.dispatchReceiverType?.scope(
                 session,
                 analysisSession.getScopeSessionFor(session),
-                FakeOverrideTypeCalculator.DoNothing,
+                CallableCopyTypeCalculator.DoNothing,
                 requiredMembersPhase = FirResolvePhase.STATUS,
             ) ?: return false
 
diff --git a/analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirImplicitTypesLazyResolver.kt b/analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirImplicitTypesLazyResolver.kt
index c577797ca1c..574ba1aecf4 100644
--- a/analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirImplicitTypesLazyResolver.kt
+++ b/analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirImplicitTypesLazyResolver.kt
@@ -18,7 +18,7 @@ import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.FirImplicitAwareBodyResolveTransformer
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.FirResolveContextCollector
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.ImplicitBodyResolveComputationSession
-import org.jetbrains.kotlin.fir.scopes.fakeOverrideSubstitution
+import org.jetbrains.kotlin.fir.scopes.callableCopySubstitutionForTypeUpdater
 
 internal object LLFirImplicitTypesLazyResolver : LLFirLazyResolver(FirResolvePhase.IMPLICIT_TYPES_BODY_RESOLVE) {
     override fun resolve(
@@ -91,11 +91,11 @@ internal class LLFirImplicitBodyTargetResolver(
 
     override fun rawResolve(target: FirElementWithResolveState): Unit = when {
         target is FirScript -> resolveScript(target)
-        target is FirCallableDeclaration && target.attributes.fakeOverrideSubstitution != null -> {
-            transformer.returnTypeCalculator.fakeOverrideTypeCalculator.computeReturnType(target)
+        target is FirCallableDeclaration && target.attributes.callableCopySubstitutionForTypeUpdater != null -> {
+            transformer.returnTypeCalculator.callableCopyTypeCalculator.computeReturnType(target)
             Unit
         }
 
         else -> super.rawResolve(target)
     }
-}
\ No newline at end of file
+}
diff --git a/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitType.txt b/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitType.txt
index 3f20b5bc81c..ae29f8784c9 100644
--- a/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitType.txt
+++ b/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitType.txt
@@ -1,5 +1,5 @@
 RAW_FIR:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -16,7 +16,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 IMPORTS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -33,7 +33,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 COMPILER_REQUIRED_ANNOTATIONS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -50,7 +50,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 COMPANION_GENERATION:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -67,7 +67,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 SUPER_TYPES:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -84,7 +84,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 TYPES:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -101,7 +101,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 STATUS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -118,7 +118,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 EXPECT_ACTUAL_MATCHING:
-TARGET: public open [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -135,7 +135,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 ARGUMENTS_OF_ANNOTATIONS:
-TARGET: public open [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -152,7 +152,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     }
 
 CONTRACTS:
-TARGET: public open [ResolvedTo(CONTRACTS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(CONTRACTS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitType.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
diff --git a/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeInDifferentModules.txt b/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeInDifferentModules.txt
index b373a391bfe..9810c3af514 100644
--- a/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeInDifferentModules.txt
+++ b/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeInDifferentModules.txt
@@ -1,5 +1,5 @@
 RAW_FIR:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -12,7 +12,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 IMPORTS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -25,7 +25,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 COMPILER_REQUIRED_ANNOTATIONS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -38,7 +38,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 COMPANION_GENERATION:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -51,7 +51,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 SUPER_TYPES:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -64,7 +64,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 TYPES:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -77,7 +77,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 STATUS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -90,7 +90,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 EXPECT_ACTUAL_MATCHING:
-TARGET: public open [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -103,7 +103,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 ARGUMENTS_OF_ANNOTATIONS:
-TARGET: public open [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
@@ -116,7 +116,7 @@ FILE: [ResolvedTo(IMPORTS)] usage.kt
     }
 
 CONTRACTS:
-TARGET: public open [ResolvedTo(CONTRACTS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(CONTRACTS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] usage.kt
     public final [ResolvedTo(STATUS)] [DelegateFieldsMapKey={0=FirFieldSymbol /Aaa.$$delegate_0}] class Aaa : R|Interface| {
diff --git a/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeScript.txt b/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeScript.txt
index 860e339a057..9770bd55389 100644
--- a/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeScript.txt
+++ b/analysis/low-level-api-fir/testdata/lazyResolve/delegateWithImplicitTypeScript.txt
@@ -1,5 +1,5 @@
 RAW_FIR:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -22,7 +22,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 IMPORTS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -45,7 +45,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 COMPILER_REQUIRED_ANNOTATIONS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -68,7 +68,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 COMPANION_GENERATION:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -91,7 +91,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 SUPER_TYPES:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -114,7 +114,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 TYPES:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -137,7 +137,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 STATUS:
-TARGET: public open [ResolvedTo(STATUS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -160,7 +160,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 EXPECT_ACTUAL_MATCHING:
-TARGET: public open [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@kotlin.script.templates.standard.ScriptTemplateWithArgs)
@@ -183,7 +183,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 ARGUMENTS_OF_ANNOTATIONS:
-TARGET: public open [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@R|kotlin/script/templates/standard/ScriptTemplateWithArgs|)
@@ -206,7 +206,7 @@ FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
 
 
 CONTRACTS:
-TARGET: public open [ResolvedTo(CONTRACTS)] [DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0, FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType)] fun implicitType(): <implicit>
+TARGET: public open [ResolvedTo(CONTRACTS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor=Empty, baseSymbol=FirNamedFunctionSymbol /Interface.implicitType), DelegatedWrapperDataKey=[wrapped=FirNamedFunctionSymbol /Interface.implicitType, containingClass=Aaa, delegateField=FirFieldSymbol /Aaa.$$delegate_0] fun implicitType(): <implicit>
 
 FILE: [ResolvedTo(IMPORTS)] delegateWithImplicitTypeScript.kts
     context(<script>@R|kotlin/script/templates/standard/ScriptTemplateWithArgs|)
diff --git a/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitType.txt b/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitType.txt
index ad99907fa83..6f39ebc021e 100644
--- a/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitType.txt
+++ b/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitType.txt
@@ -1,5 +1,5 @@
 RAW_FIR:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -22,7 +22,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 IMPORTS:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -45,7 +45,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 COMPILER_REQUIRED_ANNOTATIONS:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -68,7 +68,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 COMPANION_GENERATION:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -91,7 +91,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 SUPER_TYPES:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -114,7 +114,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 TYPES:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -137,7 +137,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 STATUS:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -160,7 +160,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 EXPECT_ACTUAL_MATCHING:
-TARGET: public final [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -183,7 +183,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 ARGUMENTS_OF_ANNOTATIONS:
-TARGET: public final [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
@@ -206,7 +206,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
     }
 
 CONTRACTS:
-TARGET: public final [ResolvedTo(CONTRACTS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(CONTRACTS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitType.kt
diff --git a/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitTypeScript.txt b/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitTypeScript.txt
index bdb33ce91ab..d15efe15eee 100644
--- a/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitTypeScript.txt
+++ b/analysis/low-level-api-fir/testdata/lazyResolve/substitutionFakeOverrideWithImplicitTypeScript.txt
@@ -1,5 +1,5 @@
 RAW_FIR:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -28,7 +28,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 IMPORTS:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -57,7 +57,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 COMPILER_REQUIRED_ANNOTATIONS:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -86,7 +86,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 COMPANION_GENERATION:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -115,7 +115,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 SUPER_TYPES:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -144,7 +144,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 TYPES:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -173,7 +173,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 STATUS:
-TARGET: public final [ResolvedTo(STATUS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(STATUS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -202,7 +202,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 EXPECT_ACTUAL_MATCHING:
-TARGET: public final [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(EXPECT_ACTUAL_MATCHING)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -231,7 +231,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 ARGUMENTS_OF_ANNOTATIONS:
-TARGET: public final [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(ARGUMENTS_OF_ANNOTATIONS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
@@ -260,7 +260,7 @@ FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
 
 
 CONTRACTS:
-TARGET: public final [ResolvedTo(CONTRACTS)] [FakeOverrideSubstitutionKey=FakeOverrideSubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
+TARGET: public final [ResolvedTo(CONTRACTS)] [CallableCopySubstitutionKey=CallableCopySubstitution(substitutor={T -> kotlin/Int}, baseSymbol=FirPropertySymbol /AbstractClass.property), SubstitutedOverrideOriginalKey=/AbstractClass.property] val property: <implicit>
 
 
 FILE: [ResolvedTo(IMPORTS)] substitutionFakeOverrideWithImplicitTypeScript.kts
diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/FirConflictsHelpers.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/FirConflictsHelpers.kt
index 01694062d78..4711849deab 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/FirConflictsHelpers.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/FirConflictsHelpers.kt
@@ -24,7 +24,7 @@ import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.outerType
 import org.jetbrains.kotlin.fir.resolve.providers.firProvider
 import org.jetbrains.kotlin.fir.resolve.scope
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.FirScope
 import org.jetbrains.kotlin.fir.scopes.impl.FirPackageMemberScope
 import org.jetbrains.kotlin.fir.scopes.impl.TypeAliasConstructorsSubstitutingScope
@@ -336,7 +336,7 @@ private fun FirClassLikeSymbol<*>.expandedClassWithConstructorsScope(context: Ch
             val expandedClass = expandedType?.toRegularClassSymbol(context.session)
             val expandedTypeScope = expandedType?.scope(
                 context.session, context.scopeSession,
-                FakeOverrideTypeCalculator.DoNothing,
+                CallableCopyTypeCalculator.DoNothing,
                 requiredMembersPhase = FirResolvePhase.STATUS,
             )
 
diff --git a/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractAnnotationDeserializer.kt b/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractAnnotationDeserializer.kt
index 4f1910d2315..f85f0fdec17 100644
--- a/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractAnnotationDeserializer.kt
+++ b/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractAnnotationDeserializer.kt
@@ -18,7 +18,7 @@ import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.defaultType
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.toSymbol
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.getDeclaredConstructors
 import org.jetbrains.kotlin.fir.symbols.impl.FirRegularClassSymbol
 import org.jetbrains.kotlin.fir.symbols.lazyDeclarationResolver
@@ -215,7 +215,7 @@ abstract class AbstractAnnotationDeserializer(
                 val classScope = firAnnotationClass.defaultType().scope(
                     useSiteSession = session,
                     scopeSession = ScopeSession(),
-                    fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+                    callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
                     requiredMembersPhase = null,
                 ) ?: error("Null scope for $classId")
 
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt
index 089839dc37b..197f0b462c8 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DelegatedMemberGenerator.kt
@@ -90,7 +90,7 @@ class DelegatedMemberGenerator(private val components: Fir2IrComponents) : Fir2I
         val delegateToScope = firField.initializer!!.resolvedType
             .fullyExpandedType(session)
             .lowerBoundIfFlexible()
-            .scope(session, scopeSession, FakeOverrideTypeCalculator.DoNothing, null) ?: return
+            .scope(session, scopeSession, CallableCopyTypeCalculator.DoNothing, null) ?: return
 
         val subClassLookupTag = firSubClass.symbol.toLookupTag()
 
diff --git a/compiler/fir/java/src/org/jetbrains/kotlin/fir/scopes/jvm/JvmMappedScope.kt b/compiler/fir/java/src/org/jetbrains/kotlin/fir/scopes/jvm/JvmMappedScope.kt
index 1bdc2cc22d0..6d03e5654b1 100644
--- a/compiler/fir/java/src/org/jetbrains/kotlin/fir/scopes/jvm/JvmMappedScope.kt
+++ b/compiler/fir/java/src/org/jetbrains/kotlin/fir/scopes/jvm/JvmMappedScope.kt
@@ -294,7 +294,7 @@ class JvmMappedScope(
             newTypeParameters = null,
             newContextReceiverTypes = emptyList(),
             isExpect = false,
-            fakeOverrideSubstitution = null
+            callableCopySubstitutionForTypeUpdater = null
         )
         return newSymbol
     }
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/ScopeUtils.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/ScopeUtils.kt
index 5251849bea9..b97230fab98 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/ScopeUtils.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/ScopeUtils.kt
@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.fir.expressions.FirSmartCastExpression
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeRawScopeSubstitutor
 import org.jetbrains.kotlin.fir.resolve.substitution.substitutorByMap
 import org.jetbrains.kotlin.fir.scopes.*
-import org.jetbrains.kotlin.fir.scopes.impl.FirScopeWithFakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.impl.FirScopeWithCallableCopyReturnTypeUpdater
 import org.jetbrains.kotlin.fir.scopes.impl.FirTypeIntersectionScope
 import org.jetbrains.kotlin.fir.scopes.impl.dynamicMembersStorage
 import org.jetbrains.kotlin.fir.scopes.impl.getOrBuildScopeForIntegerConstantOperatorType
@@ -33,7 +33,7 @@ fun FirSmartCastExpression.smartcastScope(
     val smartcastScope = smartcastType.scope(
         useSiteSession = useSiteSession,
         scopeSession = scopeSession,
-        fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+        callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
         requiredMembersPhase = requiredMembersPhase,
     )
 
@@ -44,7 +44,7 @@ fun FirSmartCastExpression.smartcastScope(
     val originalScope = originalExpression.resolvedType.scope(
         useSiteSession = useSiteSession,
         scopeSession = scopeSession,
-        fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+        callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
         requiredMembersPhase = requiredMembersPhase,
     ) ?: return smartcastScope
 
@@ -65,12 +65,12 @@ fun ConeClassLikeType.delegatingConstructorScope(
 fun ConeKotlinType.scope(
     useSiteSession: FirSession,
     scopeSession: ScopeSession,
-    fakeOverrideTypeCalculator: FakeOverrideTypeCalculator,
+    callableCopyTypeCalculator: CallableCopyTypeCalculator,
     requiredMembersPhase: FirResolvePhase?,
 ): FirTypeScope? {
     val scope = scope(useSiteSession, scopeSession, requiredMembersPhase) ?: return null
-    if (fakeOverrideTypeCalculator == FakeOverrideTypeCalculator.DoNothing) return scope
-    return FirScopeWithFakeOverrideTypeCalculator(scope, fakeOverrideTypeCalculator)
+    if (callableCopyTypeCalculator == CallableCopyTypeCalculator.DoNothing) return scope
+    return FirScopeWithCallableCopyReturnTypeUpdater(scope, callableCopyTypeCalculator)
 }
 
 private fun ConeKotlinType.scope(
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/calls/FirReceivers.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/calls/FirReceivers.kt
index 9774f8bf881..9870a102848 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/calls/FirReceivers.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/calls/FirReceivers.kt
@@ -22,7 +22,7 @@ import org.jetbrains.kotlin.fir.renderWithType
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.smartcastScope
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
@@ -41,7 +41,7 @@ abstract class ReceiverValue {
     open fun scope(useSiteSession: FirSession, scopeSession: ScopeSession): FirTypeScope? = type.scope(
         useSiteSession = useSiteSession,
         scopeSession = scopeSession,
-        fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+        callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
         requiredMembersPhase = FirResolvePhase.STATUS,
     )
 }
@@ -69,7 +69,7 @@ class ExpressionReceiverValue(override val receiverExpression: FirExpression) :
         return type.scope(
             useSiteSession,
             scopeSession,
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         )
     }
@@ -95,7 +95,7 @@ sealed class ImplicitReceiverValue<S : FirBasedSymbol<*>>(
         type.scope(
             useSiteSession,
             scopeSession,
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS
         )
         private set
@@ -153,7 +153,7 @@ sealed class ImplicitReceiverValue<S : FirBasedSymbol<*>>(
         implicitScope = type.scope(
             useSiteSession = useSiteSession,
             scopeSession = scopeSession,
-            fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+            callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         )
     }
@@ -171,7 +171,7 @@ sealed class ImplicitReceiverValue<S : FirBasedSymbol<*>>(
         implicitScope = type.scope(
             useSiteSession = useSiteSession,
             scopeSession = scopeSession,
-            fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+            callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         )
     }
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculator.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculator.kt
index e67dbdd5e94..2da8c29a809 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculator.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculator.kt
@@ -6,12 +6,12 @@
 package org.jetbrains.kotlin.fir.resolve.transformers
 
 import org.jetbrains.kotlin.fir.declarations.FirCallableDeclaration
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
 
 abstract class ReturnTypeCalculator {
-    abstract val fakeOverrideTypeCalculator: FakeOverrideTypeCalculator
+    abstract val callableCopyTypeCalculator: CallableCopyTypeCalculator
 
     abstract fun tryCalculateReturnTypeOrNull(declaration: FirCallableDeclaration): FirResolvedTypeRef?
 
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculatorForFullBodyResolve.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculatorForFullBodyResolve.kt
index 99aa6ec1d3b..f01c7f5c35f 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculatorForFullBodyResolve.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/transformers/ReturnTypeCalculatorForFullBodyResolve.kt
@@ -9,7 +9,7 @@ import org.jetbrains.kotlin.fir.declarations.FirCallableDeclaration
 import org.jetbrains.kotlin.fir.diagnostics.ConeSimpleDiagnostic
 import org.jetbrains.kotlin.fir.diagnostics.DiagnosticKind
 import org.jetbrains.kotlin.fir.render
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
 import org.jetbrains.kotlin.fir.types.builder.buildErrorTypeRef
 
@@ -30,14 +30,14 @@ class ReturnTypeCalculatorForFullBodyResolve private constructor(
         )
     }
 
-    override val fakeOverrideTypeCalculator: FakeOverrideTypeCalculator
-        get() = FakeOverrideTypeCalculator.Forced
+    override val callableCopyTypeCalculator: CallableCopyTypeCalculator
+        get() = CallableCopyTypeCalculator.Forced
 
     override fun tryCalculateReturnTypeOrNull(declaration: FirCallableDeclaration): FirResolvedTypeRef? {
         val returnTypeRef = declaration.returnTypeRef
         if (returnTypeRef is FirResolvedTypeRef) return returnTypeRef
         if (declaration.origin.fromSupertypes) {
-            return FakeOverrideTypeCalculator.Forced.computeReturnType(declaration)
+            return CallableCopyTypeCalculator.Forced.computeReturnType(declaration)
         }
 
         return buildErrorTypeRef { diagnostic = ConeSimpleDiagnostic("$reason: ${declaration.render()}", diagnosticKind) }
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FakeOverrideTypeCalculator.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/CallableCopyTypeCalculator.kt
similarity index 68%
rename from compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FakeOverrideTypeCalculator.kt
rename to compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/CallableCopyTypeCalculator.kt
index 5e22f7a5e7c..b5a10a97519 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FakeOverrideTypeCalculator.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/CallableCopyTypeCalculator.kt
@@ -15,32 +15,33 @@ import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
 import org.jetbrains.kotlin.fir.types.FirTypeRef
 
-abstract class FakeOverrideTypeCalculator {
+abstract class CallableCopyTypeCalculator {
     abstract fun computeReturnType(declaration: FirCallableDeclaration): FirTypeRef?
 
-    object DoNothing : FakeOverrideTypeCalculator() {
+    object DoNothing : CallableCopyTypeCalculator() {
         override fun computeReturnType(declaration: FirCallableDeclaration): FirTypeRef {
             return declaration.returnTypeRef
         }
     }
 
-    abstract class AbstractFakeOverrideTypeCalculator : FakeOverrideTypeCalculator() {
+    abstract class AbstractCallableCopyTypeCalculator : CallableCopyTypeCalculator() {
         override fun computeReturnType(declaration: FirCallableDeclaration): FirResolvedTypeRef? {
-            val fakeOverrideSubstitution = declaration.attributes.fakeOverrideSubstitution ?: return declaration.getResolvedTypeRef()
+            val callableCopySubstitutionForTypeUpdater = declaration.attributes.callableCopySubstitutionForTypeUpdater
+                ?: return declaration.getResolvedTypeRef()
 
             // TODO: drop synchronized in KT-60385
-            synchronized(fakeOverrideSubstitution) {
-                if (declaration.attributes.fakeOverrideSubstitution == null) {
+            synchronized(callableCopySubstitutionForTypeUpdater) {
+                if (declaration.attributes.callableCopySubstitutionForTypeUpdater == null) {
                     return declaration.returnTypeRef as FirResolvedTypeRef
                 }
 
-                val (substitutor, baseSymbol) = fakeOverrideSubstitution
+                val (substitutor, baseSymbol) = callableCopySubstitutionForTypeUpdater
                 val baseDeclaration = baseSymbol.fir as FirCallableDeclaration
                 val baseReturnType = computeReturnType(baseDeclaration)?.type ?: return null
                 val coneType = substitutor.substituteOrSelf(baseReturnType)
                 val returnType = declaration.returnTypeRef.resolvedTypeFromPrototype(coneType)
                 declaration.replaceReturnTypeRef(returnType)
-                declaration.attributes.fakeOverrideSubstitution = null
+                declaration.attributes.callableCopySubstitutionForTypeUpdater = null
                 return returnType
             }
         }
@@ -49,7 +50,7 @@ abstract class FakeOverrideTypeCalculator {
     }
 
 
-    object Forced : AbstractFakeOverrideTypeCalculator() {
+    object Forced : AbstractCallableCopyTypeCalculator() {
         override fun FirCallableDeclaration.getResolvedTypeRef(): FirResolvedTypeRef? {
             return returnTypeRef as? FirResolvedTypeRef
         }
@@ -58,13 +59,13 @@ abstract class FakeOverrideTypeCalculator {
 
 // ---------------------------------------------------------------------------------------------------------------------------------------
 
-object FakeOverrideSubstitutionKey : FirDeclarationDataKey()
+private object CallableCopySubstitutionKey : FirDeclarationDataKey()
 
-var FirDeclarationAttributes.fakeOverrideSubstitution: FakeOverrideSubstitution? by FirDeclarationDataRegistry.attributesAccessor(
-    FakeOverrideSubstitutionKey
+var FirDeclarationAttributes.callableCopySubstitutionForTypeUpdater: CallableCopySubstitution? by FirDeclarationDataRegistry.attributesAccessor(
+    CallableCopySubstitutionKey
 )
 
-data class FakeOverrideSubstitution(
+data class CallableCopySubstitution internal constructor(
     val substitutor: ConeSubstitutor,
     val baseSymbol: FirBasedSymbol<*>
 )
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FirKotlinScopeProvider.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FirKotlinScopeProvider.kt
index 493561d8d48..76d621e2000 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FirKotlinScopeProvider.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FirKotlinScopeProvider.kt
@@ -125,7 +125,7 @@ fun FirClass.unsubstitutedScope(
     memberRequiredPhase: FirResolvePhase?,
 ): FirTypeScope {
     val scope = scopeProvider.getUseSiteMemberScope(this, useSiteSession, scopeSession, memberRequiredPhase)
-    if (withForcedTypeCalculator) return FirScopeWithFakeOverrideTypeCalculator(scope, FakeOverrideTypeCalculator.Forced)
+    if (withForcedTypeCalculator) return FirScopeWithCallableCopyReturnTypeUpdater(scope, CallableCopyTypeCalculator.Forced)
     return scope
 }
 
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/Scopes.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/Scopes.kt
index 4b075297337..803ff774676 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/Scopes.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/Scopes.kt
@@ -29,7 +29,7 @@ fun debugCollectOverrides(symbol: FirCallableSymbol<*>, session: FirSession, sco
     val scope = symbol.dispatchReceiverType?.scope(
         session,
         scopeSession,
-        FakeOverrideTypeCalculator.DoNothing,
+        CallableCopyTypeCalculator.DoNothing,
         requiredMembersPhase = FirResolvePhase.STATUS,
     ) ?: return emptyMap()
 
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirClassSubstitutionScope.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirClassSubstitutionScope.kt
index 26fee6be061..f4b306ec6d0 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirClassSubstitutionScope.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirClassSubstitutionScope.kt
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.fir.originalForSubstitutionOverride
 import org.jetbrains.kotlin.fir.resolve.ScopeSessionKey
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
 import org.jetbrains.kotlin.fir.resolve.substitution.chain
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideSubstitution
+import org.jetbrains.kotlin.fir.scopes.CallableCopySubstitution
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.scopes.ProcessorAction
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeLookupTag
@@ -127,9 +127,8 @@ class FirClassSubstitutionScope(
 
         val symbolForOverride = FirFakeOverrideGenerator.createSymbolForSubstitutionOverride(original, newOwnerClassId)
 
-        val (newTypeParameters, newDispatchReceiverType, newReceiverType, newReturnType, newSubstitutor, fakeOverrideSubstitution) = createSubstitutedData(
-            member, symbolForOverride
-        )
+        val (newTypeParameters, newDispatchReceiverType, newReceiverType, newReturnType, newSubstitutor, callableCopySubstitution) =
+            createSubstitutedData(member, symbolForOverride)
         val newParameterTypes = member.valueParameters.map {
             it.returnTypeRef.coneType.substitute(newSubstitutor)
         }
@@ -142,7 +141,7 @@ class FirClassSubstitutionScope(
             newReturnType == null &&
             newParameterTypes.all { it == null } &&
             newTypeParameters === member.typeParameters &&
-            fakeOverrideSubstitution == null &&
+            callableCopySubstitution == null &&
             newContextReceiverTypes.all { it == null }
         ) {
             if (original.dispatchReceiverType?.substitute(substitutor) != null) {
@@ -177,7 +176,7 @@ class FirClassSubstitutionScope(
             newParameterTypes,
             newTypeParameters as List<FirTypeParameter>,
             makeExpect,
-            fakeOverrideSubstitution
+            callableCopySubstitution
         )
     }
 
@@ -187,7 +186,7 @@ class FirClassSubstitutionScope(
         val constructor = original.fir
 
         val symbolForOverride = FirConstructorSymbol(original.callableId)
-        val (newTypeParameters, _, _, newReturnType, newSubstitutor, fakeOverrideSubstitution) =
+        val (newTypeParameters, _, _, newReturnType, newSubstitutor, callableCopySubstitution) =
             createSubstitutedData(constructor, symbolForOverride)
 
         // If constructor has a dispatch receiver, it should be an inner class' constructor.
@@ -224,7 +223,7 @@ class FirClassSubstitutionScope(
             newContextReceiverTypes,
             newTypeParameters,
             makeExpect,
-            fakeOverrideSubstitution
+            callableCopySubstitution
         ).symbol
     }
 
@@ -236,9 +235,8 @@ class FirClassSubstitutionScope(
 
         val symbolForOverride = FirFakeOverrideGenerator.createSymbolForSubstitutionOverride(original, newOwnerClassId)
 
-        val (newTypeParameters, newDispatchReceiverType, newReceiverType, newReturnType, _, fakeOverrideSubstitution) = createSubstitutedData(
-            member, symbolForOverride
-        )
+        val (newTypeParameters, newDispatchReceiverType, newReceiverType, newReturnType, _, callableCopySubstitutionForTypeUpdater) =
+            createSubstitutedData(member, symbolForOverride)
 
         val newContextReceiverTypes = member.contextReceivers.map {
             it.typeRef.coneType.substitute(substitutor)
@@ -247,7 +245,7 @@ class FirClassSubstitutionScope(
         if (newReceiverType == null &&
             newReturnType == null &&
             newTypeParameters === member.typeParameters &&
-            fakeOverrideSubstitution == null &&
+            callableCopySubstitutionForTypeUpdater == null &&
             newContextReceiverTypes.all { it == null }
         ) {
             if (original.dispatchReceiverType?.substitute(substitutor) != null) {
@@ -277,7 +275,7 @@ class FirClassSubstitutionScope(
             newReturnType,
             newTypeParameters as List<FirTypeParameter>,
             makeExpect,
-            fakeOverrideSubstitution
+            callableCopySubstitutionForTypeUpdater
         )
     }
 
@@ -287,7 +285,7 @@ class FirClassSubstitutionScope(
         val receiverType: ConeKotlinType?,
         val returnType: ConeKotlinType?,
         val substitutor: ConeSubstitutor,
-        val fakeOverrideSubstitution: FakeOverrideSubstitution?
+        val callableCopySubstitution: CallableCopySubstitution?
     )
 
     private fun createSubstitutedData(member: FirCallableDeclaration, symbolForOverride: FirBasedSymbol<*>): SubstitutedData {
@@ -309,7 +307,7 @@ class FirClassSubstitutionScope(
         val newDispatchReceiverType = dispatchReceiverTypeForSubstitutedMembers.substitute(substitutor)
 
         val returnType = member.returnTypeRef.coneTypeSafe<ConeKotlinType>()
-        val fakeOverrideSubstitution = runIf(returnType == null) { FakeOverrideSubstitution(substitutor, member.symbol) }
+        val callableCopySubstitution = runIf(returnType == null) { CallableCopySubstitution(substitutor, member.symbol) }
         val newReturnType = returnType?.substitute(substitutor)
         return SubstitutedData(
             newTypeParameters,
@@ -317,7 +315,7 @@ class FirClassSubstitutionScope(
             newReceiverType,
             newReturnType,
             substitutor,
-            fakeOverrideSubstitution
+            callableCopySubstitution
         )
     }
 
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDelegatedMemberScope.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDelegatedMemberScope.kt
index 96af01e1ade..d819a82712c 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDelegatedMemberScope.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDelegatedMemberScope.kt
@@ -54,7 +54,7 @@ class FirDelegatedMemberScope(
     private fun buildScope(delegateField: FirField): FirTypeScope? = delegateField.symbol.resolvedReturnType.scope(
         session,
         scopeSession,
-        FakeOverrideTypeCalculator.Forced,
+        CallableCopyTypeCalculator.Forced,
         requiredMembersPhase = null,
     )
 
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDynamicScope.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDynamicScope.kt
index 2f03fa815d1..9f9e6c57d63 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDynamicScope.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirDynamicScope.kt
@@ -26,7 +26,7 @@ import org.jetbrains.kotlin.fir.expressions.FirOperationNameConventions
 import org.jetbrains.kotlin.fir.moduleData
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.scope
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.scopes.ProcessorAction
 import org.jetbrains.kotlin.fir.symbols.impl.*
@@ -65,7 +65,7 @@ class FirDynamicScope @FirDynamicScopeConstructor constructor(
         session.builtinTypes.anyType.type.scope(
             session,
             scopeSession,
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = null,
         )
     }
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirFakeOverrideGenerator.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirFakeOverrideGenerator.kt
index bb9d06bb856..99ef46ed30e 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirFakeOverrideGenerator.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirFakeOverrideGenerator.kt
@@ -17,8 +17,8 @@ import org.jetbrains.kotlin.fir.declarations.utils.*
 import org.jetbrains.kotlin.fir.resolve.substitution.ChainedSubstitutor
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
 import org.jetbrains.kotlin.fir.resolve.substitution.substitutorByMap
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideSubstitution
-import org.jetbrains.kotlin.fir.scopes.fakeOverrideSubstitution
+import org.jetbrains.kotlin.fir.scopes.CallableCopySubstitution
+import org.jetbrains.kotlin.fir.scopes.callableCopySubstitutionForTypeUpdater
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeLookupTag
 import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.*
@@ -44,11 +44,13 @@ object FirFakeOverrideGenerator {
         newParameterTypes: List<ConeKotlinType?>? = null,
         newTypeParameters: List<FirTypeParameter>? = null,
         isExpect: Boolean = baseFunction.isExpect,
-        fakeOverrideSubstitution: FakeOverrideSubstitution? = null
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution? = null
     ): FirNamedFunctionSymbol {
         createSubstitutionOverrideFunction(
-            symbolForSubstitutionOverride, session, baseFunction, derivedClassLookupTag, newDispatchReceiverType, newReceiverType,
-            newContextReceiverTypes, newReturnType, newParameterTypes, newTypeParameters, isExpect, fakeOverrideSubstitution, origin,
+            symbolForSubstitutionOverride, session, baseFunction, derivedClassLookupTag,
+            newDispatchReceiverType, newReceiverType, newContextReceiverTypes,
+            newReturnType, newParameterTypes, newTypeParameters,
+            isExpect, callableCopySubstitutionForTypeUpdater, origin,
         )
         return symbolForSubstitutionOverride
     }
@@ -73,7 +75,7 @@ object FirFakeOverrideGenerator {
         newParameterTypes: List<ConeKotlinType?>?,
         newTypeParameters: List<FirTypeParameter>?,
         isExpect: Boolean = baseFunction.isExpect,
-        fakeOverrideSubstitution: FakeOverrideSubstitution?,
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution?,
         origin: FirDeclarationOrigin.SubstitutionOverride,
     ): FirSimpleFunction {
         // TODO: consider using here some light-weight functions instead of pseudo-real FirMemberFunctionImpl
@@ -91,7 +93,7 @@ object FirFakeOverrideGenerator {
             newReceiverType,
             newContextReceiverTypes,
             newReturnType,
-            fakeOverrideSubstitution = fakeOverrideSubstitution
+            callableCopySubstitutionForTypeUpdater = callableCopySubstitutionForTypeUpdater
         ).apply {
             originalForSubstitutionOverrideAttr = baseFunction
         }
@@ -112,7 +114,7 @@ object FirFakeOverrideGenerator {
         newReturnType: ConeKotlinType? = null,
         newModality: Modality? = null,
         newVisibility: Visibility? = null,
-        fakeOverrideSubstitution: FakeOverrideSubstitution? = null
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution? = null
     ): FirSimpleFunction {
         checkStatusIsResolved(baseFunction)
 
@@ -129,7 +131,7 @@ object FirFakeOverrideGenerator {
             attributes = baseFunction.attributes.copy()
             typeParameters += configureAnnotationsTypeParametersAndSignature(
                 session, baseFunction, newParameterTypes, newTypeParameters,
-                newReceiverType, newContextReceiverTypes, newReturnType, fakeOverrideSubstitution, newSymbol
+                newReceiverType, newContextReceiverTypes, newReturnType, callableCopySubstitutionForTypeUpdater, newSymbol
             ).filterIsInstance<FirTypeParameter>()
             deprecationsProvider = baseFunction.deprecationsProvider
         }.apply {
@@ -149,7 +151,7 @@ object FirFakeOverrideGenerator {
         newContextReceiverTypes: List<ConeKotlinType?>?,
         newTypeParameters: List<FirTypeParameterRef>?,
         isExpect: Boolean,
-        fakeOverrideSubstitution: FakeOverrideSubstitution?
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution?
     ): FirConstructor {
         checkStatusIsResolved(baseConstructor)
 
@@ -176,7 +178,7 @@ object FirFakeOverrideGenerator {
                 newReceiverType = null,
                 newContextReceiverTypes,
                 newReturnType,
-                fakeOverrideSubstitution,
+                callableCopySubstitutionForTypeUpdater,
                 fakeOverrideSymbol
             )
 
@@ -200,7 +202,7 @@ object FirFakeOverrideGenerator {
         newReceiverType: ConeKotlinType?,
         newContextReceiverTypes: List<ConeKotlinType?>?,
         newReturnType: ConeKotlinType?,
-        fakeOverrideSubstitution: FakeOverrideSubstitution?,
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution?,
         symbolForOverride: FirFunctionSymbol<*>,
     ): List<FirTypeParameterRef> {
         return when {
@@ -212,7 +214,7 @@ object FirFakeOverrideGenerator {
                     newReceiverType,
                     newContextReceiverTypes,
                     newReturnType,
-                    fakeOverrideSubstitution,
+                    callableCopySubstitutionForTypeUpdater,
                     origin,
                 )
                 emptyList()
@@ -228,9 +230,9 @@ object FirFakeOverrideGenerator {
                 val (copiedReceiverType, copiedContextReceiverTypes, possibleReturnType) = substituteReceiverAndReturnType(
                     baseFunction as FirCallableDeclaration, newReceiverType, newContextReceiverTypes, newReturnType, substitutor
                 )
-                val (copiedReturnType, newFakeOverrideSubstitution) = when (possibleReturnType) {
+                val (copiedReturnType, newCallableCopySubstitutionForTypeUpdater) = when (possibleReturnType) {
                     is Maybe.Value -> possibleReturnType.value to null
-                    else -> null to FakeOverrideSubstitution(substitutor, symbol)
+                    else -> null to CallableCopySubstitution(substitutor, symbol)
                 }
                 configureAnnotationsAndSignature(
                     baseFunction,
@@ -239,7 +241,7 @@ object FirFakeOverrideGenerator {
                     copiedReceiverType,
                     copiedContextReceiverTypes,
                     copiedReturnType,
-                    newFakeOverrideSubstitution,
+                    newCallableCopySubstitutionForTypeUpdater,
                     origin,
                 )
                 copiedTypeParameters
@@ -252,7 +254,7 @@ object FirFakeOverrideGenerator {
                     newReceiverType,
                     newContextReceiverTypes,
                     newReturnType,
-                    fakeOverrideSubstitution,
+                    callableCopySubstitutionForTypeUpdater,
                     origin,
                 )
                 newTypeParameters
@@ -267,19 +269,20 @@ object FirFakeOverrideGenerator {
         newReceiverType: ConeKotlinType?,
         newContextReceiverTypes: List<ConeKotlinType?>?,
         newReturnType: ConeKotlinType?,
-        fakeOverrideSubstitution: FakeOverrideSubstitution?,
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution?,
         origin: FirDeclarationOrigin,
     ) {
         annotations += baseFunction.annotations
 
         @Suppress("NAME_SHADOWING")
-        val fakeOverrideSubstitution = fakeOverrideSubstitution ?: runIf(baseFunction.returnTypeRef is FirImplicitTypeRef) {
-            FakeOverrideSubstitution(ConeSubstitutor.Empty, baseFunction.symbol)
-        }
+        val callableCopySubstitutionForTypeUpdater = callableCopySubstitutionForTypeUpdater
+            ?: runIf(baseFunction.returnTypeRef is FirImplicitTypeRef) {
+                CallableCopySubstitution(ConeSubstitutor.Empty, baseFunction.symbol)
+            }
 
-        if (fakeOverrideSubstitution != null) {
+        if (callableCopySubstitutionForTypeUpdater != null) {
             returnTypeRef = FirImplicitTypeRefImplWithoutSource
-            attributes.fakeOverrideSubstitution = fakeOverrideSubstitution
+            attributes.callableCopySubstitutionForTypeUpdater = callableCopySubstitutionForTypeUpdater
         } else {
             returnTypeRef = baseFunction.returnTypeRef.withReplacedReturnType(newReturnType)
         }
@@ -325,12 +328,12 @@ object FirFakeOverrideGenerator {
         newReturnType: ConeKotlinType? = null,
         newTypeParameters: List<FirTypeParameter>? = null,
         isExpect: Boolean = baseProperty.isExpect,
-        fakeOverrideSubstitution: FakeOverrideSubstitution? = null
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution? = null
     ): FirPropertySymbol {
         createCopyForFirProperty(
             symbolForSubstitutionOverride, baseProperty, derivedClassLookupTag, session, origin,
             isExpect, newDispatchReceiverType, newTypeParameters, newReceiverType, newContextReceiverTypes, newReturnType,
-            fakeOverrideSubstitution = fakeOverrideSubstitution
+            callableCopySubstitutionForTypeUpdater = callableCopySubstitutionForTypeUpdater
         ).apply {
             originalForSubstitutionOverrideAttr = baseProperty
         }
@@ -359,7 +362,7 @@ object FirFakeOverrideGenerator {
         newReturnType: ConeKotlinType? = null,
         newModality: Modality? = null,
         newVisibility: Visibility? = null,
-        fakeOverrideSubstitution: FakeOverrideSubstitution? = null
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution? = null
     ): FirProperty {
         checkStatusIsResolved(baseProperty)
 
@@ -383,7 +386,7 @@ object FirFakeOverrideGenerator {
                 newReceiverType,
                 newContextReceiverTypes,
                 newReturnType,
-                fakeOverrideSubstitution
+                callableCopySubstitutionForTypeUpdater
             )
             deprecationsProvider = baseProperty.deprecationsProvider
 
@@ -510,7 +513,7 @@ object FirFakeOverrideGenerator {
         newReturnType: ConeKotlinType? = null,
         newModality: Modality? = null,
         newVisibility: Visibility? = null,
-        fakeOverrideSubstitution: FakeOverrideSubstitution? = null
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution? = null
     ): FirField {
         return buildField {
             source = baseField.source
@@ -525,7 +528,8 @@ object FirFakeOverrideGenerator {
             dispatchReceiverType = newDispatchReceiverType
             attributes = baseField.attributes.copy()
             configureAnnotationsAndSignature(
-                baseField, newReceiverType, newContextReceiverTypes, newReturnType, fakeOverrideSubstitution, updateReceiver = false
+                baseField, newReceiverType, newContextReceiverTypes, newReturnType,
+                callableCopySubstitutionForTypeUpdater, updateReceiver = false
             )
             deprecationsProvider = baseField.deprecationsProvider
         }.apply {
@@ -540,12 +544,12 @@ object FirFakeOverrideGenerator {
         newReceiverType: ConeKotlinType?,
         newContextReceiverTypes: List<ConeKotlinType?>?,
         newReturnType: ConeKotlinType?,
-        fakeOverrideSubstitution: FakeOverrideSubstitution?
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution?
     ): List<FirTypeParameter> {
         return when {
             baseProperty.typeParameters.isEmpty() -> {
                 configureAnnotationsAndSignature(
-                    baseProperty, newReceiverType, newContextReceiverTypes, newReturnType, fakeOverrideSubstitution
+                    baseProperty, newReceiverType, newContextReceiverTypes, newReturnType, callableCopySubstitutionForTypeUpdater
                 )
                 emptyList()
             }
@@ -556,18 +560,19 @@ object FirFakeOverrideGenerator {
                 val (copiedReceiverType, copiedContextReceiverTypes, possibleReturnType) = substituteReceiverAndReturnType(
                     baseProperty, newReceiverType, newContextReceiverTypes, newReturnType, substitutor
                 )
-                val (copiedReturnType, newFakeOverrideSubstitution) = when (possibleReturnType) {
+                val (copiedReturnType, newCallableCopySubstitutionForTypeUpdater) = when (possibleReturnType) {
                     is Maybe.Value -> possibleReturnType.value to null
-                    else -> null to FakeOverrideSubstitution(substitutor, baseProperty.symbol)
+                    else -> null to CallableCopySubstitution(substitutor, baseProperty.symbol)
                 }
                 configureAnnotationsAndSignature(
-                    baseProperty, copiedReceiverType, copiedContextReceiverTypes, copiedReturnType, newFakeOverrideSubstitution
+                    baseProperty, copiedReceiverType, copiedContextReceiverTypes,
+                    copiedReturnType, newCallableCopySubstitutionForTypeUpdater
                 )
                 copiedTypeParameters.filterIsInstance<FirTypeParameter>()
             }
             else -> {
                 configureAnnotationsAndSignature(
-                    baseProperty, newReceiverType, newContextReceiverTypes, newReturnType, fakeOverrideSubstitution
+                    baseProperty, newReceiverType, newContextReceiverTypes, newReturnType, callableCopySubstitutionForTypeUpdater
                 )
                 newTypeParameters
             }
@@ -611,19 +616,20 @@ object FirFakeOverrideGenerator {
         newReceiverType: ConeKotlinType?,
         newContextReceiverTypes: List<ConeKotlinType?>?,
         newReturnType: ConeKotlinType?,
-        fakeOverrideSubstitution: FakeOverrideSubstitution?,
+        callableCopySubstitutionForTypeUpdater: CallableCopySubstitution?,
         updateReceiver: Boolean = true
     ) {
         annotations += baseVariable.annotations
 
         @Suppress("NAME_SHADOWING")
-        val fakeOverrideSubstitution = fakeOverrideSubstitution ?: runIf(baseVariable.returnTypeRef is FirImplicitTypeRef) {
-            FakeOverrideSubstitution(ConeSubstitutor.Empty, baseVariable.symbol)
-        }
+        val callableCopySubstitutionForTypeUpdater = callableCopySubstitutionForTypeUpdater
+            ?: runIf(baseVariable.returnTypeRef is FirImplicitTypeRef) {
+                CallableCopySubstitution(ConeSubstitutor.Empty, baseVariable.symbol)
+            }
 
-        if (fakeOverrideSubstitution != null) {
+        if (callableCopySubstitutionForTypeUpdater != null) {
             returnTypeRef = FirImplicitTypeRefImplWithoutSource
-            attributes.fakeOverrideSubstitution = fakeOverrideSubstitution
+            attributes.callableCopySubstitutionForTypeUpdater = callableCopySubstitutionForTypeUpdater
         } else {
             returnTypeRef = baseVariable.returnTypeRef.withReplacedReturnType(newReturnType)
         }
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirIntegerConstantOperatorScope.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirIntegerConstantOperatorScope.kt
index dd6abb1ce0d..6fbca105967 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirIntegerConstantOperatorScope.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirIntegerConstantOperatorScope.kt
@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.scopeSessionKey
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.scopes.ProcessorAction
 import org.jetbrains.kotlin.fir.scopes.getFunctions
@@ -21,9 +21,7 @@ import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.types.builder.buildResolvedTypeRef
-import org.jetbrains.kotlin.fir.utils.exceptions.withConeTypeEntry
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.utils.exceptions.errorWithAttachment
 import kotlin.contracts.ExperimentalContracts
 import kotlin.contracts.contract
 
@@ -41,7 +39,7 @@ class FirIntegerConstantOperatorScope(
         baseType.scope(
             session,
             scopeSession,
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         ) ?: Empty
     }
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirScopeWithFakeOverrideTypeCalculator.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirScopeWithCallableCopyReturnTypeUpdater.kt
similarity index 82%
rename from compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirScopeWithFakeOverrideTypeCalculator.kt
rename to compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirScopeWithCallableCopyReturnTypeUpdater.kt
index 413a7261bf9..27c96e3e236 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirScopeWithFakeOverrideTypeCalculator.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirScopeWithCallableCopyReturnTypeUpdater.kt
@@ -8,16 +8,22 @@ package org.jetbrains.kotlin.fir.scopes.impl
 import org.jetbrains.kotlin.fir.declarations.FirCallableDeclaration
 import org.jetbrains.kotlin.fir.isDelegated
 import org.jetbrains.kotlin.fir.isSubstitutionOrIntersectionOverride
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.FirDelegatingTypeScope
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.scopes.ProcessorAction
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.name.Name
 
-class FirScopeWithFakeOverrideTypeCalculator(
+/**
+ * This scope is a wrapper which is intended to use with scopes that can create callable copies.
+ *
+ * The main purpose of this scope is to update dispatched callables return types
+ * in case it is not yet calculated due to implicit body resolve logic.
+ */
+class FirScopeWithCallableCopyReturnTypeUpdater(
     private val delegate: FirTypeScope,
-    private val fakeOverrideTypeCalculator: FakeOverrideTypeCalculator
+    private val callableCopyTypeCalculator: CallableCopyTypeCalculator
 ) : FirDelegatingTypeScope(delegate) {
     override fun processFunctionsByName(name: Name, processor: (FirNamedFunctionSymbol) -> Unit) {
         delegate.processFunctionsByName(name) {
@@ -55,7 +61,7 @@ class FirScopeWithFakeOverrideTypeCalculator(
 
     private fun updateReturnType(declaration: FirCallableDeclaration) {
         if (declaration.isSubstitutionOrIntersectionOverride || declaration.isDelegated) {
-            fakeOverrideTypeCalculator.computeReturnType(declaration)
+            callableCopyTypeCalculator.computeReturnType(declaration)
         }
     }
 
diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/FunctionalTypeUtils.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/FunctionalTypeUtils.kt
index 3c1875bf95e..e30dcd2d3e5 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/FunctionalTypeUtils.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/FunctionalTypeUtils.kt
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.toSymbol
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.ProcessorAction
 import org.jetbrains.kotlin.fir.scopes.processOverriddenFunctions
 import org.jetbrains.kotlin.fir.scopes.unsubstitutedScope
@@ -191,16 +191,16 @@ fun ConeKotlinType.findContributedInvokeSymbol(
 ): FirFunctionSymbol<*>? {
     val baseInvokeSymbol = expectedFunctionType.findBaseInvokeSymbol(session, scopeSession) ?: return null
 
-    val fakeOverrideTypeCalculator = if (shouldCalculateReturnTypesOfFakeOverrides) {
-        FakeOverrideTypeCalculator.Forced
+    val callableCopyTypeCalculator = if (shouldCalculateReturnTypesOfFakeOverrides) {
+        CallableCopyTypeCalculator.Forced
     } else {
-        FakeOverrideTypeCalculator.DoNothing
+        CallableCopyTypeCalculator.DoNothing
     }
 
     val scope = scope(
         useSiteSession = session,
         scopeSession = scopeSession,
-        fakeOverrideTypeCalculator = fakeOverrideTypeCalculator,
+        callableCopyTypeCalculator = callableCopyTypeCalculator,
         requiredMembersPhase = FirResolvePhase.STATUS,
     ) ?: return null
 
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallableReferenceResolution.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallableReferenceResolution.kt
index 353bb01926b..577af77060a 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallableReferenceResolution.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallableReferenceResolution.kt
@@ -18,7 +18,7 @@ import org.jetbrains.kotlin.fir.resolve.*
 import org.jetbrains.kotlin.fir.resolve.diagnostics.ConeUnsupportedCallableReferenceTarget
 import org.jetbrains.kotlin.fir.resolve.inference.extractInputOutputTypesFromCallableReferenceExpectedType
 import org.jetbrains.kotlin.fir.resolve.inference.model.ConeArgumentConstraintPosition
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.utils.exceptions.withConeTypeEntry
@@ -176,7 +176,7 @@ private fun BodyResolveComponents.getCallableReferenceAdaptation(
     val originScope = function.dispatchReceiverType?.scope(
         useSiteSession = session,
         scopeSession = scopeSession,
-        fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+        callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
         requiredMembersPhase = FirResolvePhase.STATUS,
     )
 
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/ConstructorProcessing.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/ConstructorProcessing.kt
index e3b04000476..d0f95056414 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/ConstructorProcessing.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/ConstructorProcessing.kt
@@ -11,7 +11,7 @@ import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.declarations.utils.isInner
 import org.jetbrains.kotlin.fir.resolve.*
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.FirScope
 import org.jetbrains.kotlin.fir.scopes.impl.TypeAliasConstructorsSubstitutingScope
 import org.jetbrains.kotlin.fir.scopes.processClassifiersByName
@@ -172,7 +172,7 @@ private fun processConstructors(
                 val basicScope = type.scope(
                     session,
                     bodyResolveComponents.scopeSession,
-                    FakeOverrideTypeCalculator.DoNothing,
+                    CallableCopyTypeCalculator.DoNothing,
                     requiredMembersPhase = FirResolvePhase.STATUS,
                 )
 
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/SuperCalls.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/SuperCalls.kt
index 348543289c7..83a215666c0 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/SuperCalls.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/SuperCalls.kt
@@ -19,7 +19,7 @@ import org.jetbrains.kotlin.fir.references.FirNamedReference
 import org.jetbrains.kotlin.fir.resolve.BodyResolveComponents
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.toSymbol
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.symbols.impl.FirRegularClassSymbol
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.unwrapFakeOverrides
@@ -132,7 +132,7 @@ private fun BodyResolveComponents.getFunctionMembers(type: ConeKotlinType, name:
         type.scope(
             useSiteSession = session,
             scopeSession = scopeSession,
-            fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+            callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         )?.processFunctionsByName(name) { add(it.fir) }
     }
@@ -142,7 +142,7 @@ private fun BodyResolveComponents.getPropertyMembers(type: ConeKotlinType, name:
         type.scope(
             useSiteSession = session,
             scopeSession = scopeSession,
-            fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+            callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         )?.processPropertiesByName(name) { addIfNotNull(it.fir as? FirVariable) }
     }
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevels.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevels.kt
index c638b0b8ec2..eb49c8b9bb2 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevels.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevels.kt
@@ -90,7 +90,7 @@ class MemberScopeTowerLevel(
             ?.scope(
                 session,
                 scopeSession,
-                bodyResolveComponents.returnTypeCalculator.fakeOverrideTypeCalculator,
+                bodyResolveComponents.returnTypeCalculator.callableCopyTypeCalculator,
                 requiredMembersPhase = FirResolvePhase.STATUS,
             )
 
@@ -135,7 +135,7 @@ class MemberScopeTowerLevel(
                 useSiteForSyntheticScope = typeForSyntheticScope.scope(
                     session,
                     scopeSession,
-                    FakeOverrideTypeCalculator.DoNothing,
+                    CallableCopyTypeCalculator.DoNothing,
                     requiredMembersPhase = FirResolvePhase.STATUS,
                 ) ?: errorWithAttachment("No scope for flexible type scope, while it's not null") {
                     withConeTypeEntry("dispatchReceiverType", dispatchReceiverType)
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/FirCallCompletionResultsWriterTransformer.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/FirCallCompletionResultsWriterTransformer.kt
index 1b711fca5ed..8d11c60f0e6 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/FirCallCompletionResultsWriterTransformer.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/FirCallCompletionResultsWriterTransformer.kt
@@ -27,7 +27,7 @@ import org.jetbrains.kotlin.fir.resolve.inference.ResolvedLambdaAtom
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
 import org.jetbrains.kotlin.fir.resolve.substitution.substitutorByMap
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.*
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.impl.ConvertibleIntegerOperators.binaryOperatorsWithSignedArgument
 import org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope
 import org.jetbrains.kotlin.fir.scopes.impl.isWrappedIntegerOperator
@@ -223,7 +223,7 @@ class FirCallCompletionResultsWriterTransformer(
             updatedDispatchReceiverType.scope(
                 session,
                 scopeSession,
-                FakeOverrideTypeCalculator.DoNothing,
+                CallableCopyTypeCalculator.DoNothing,
                 FirResolvePhase.STATUS
             ) as? FirClassSubstitutionScope ?: return null
 
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/IntegerLiteralAndOperatorApproximationTransformer.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/IntegerLiteralAndOperatorApproximationTransformer.kt
index 91cda672490..1892b7c8c9c 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/IntegerLiteralAndOperatorApproximationTransformer.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/IntegerLiteralAndOperatorApproximationTransformer.kt
@@ -23,7 +23,7 @@ import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.scope
 import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.resultType
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
 import org.jetbrains.kotlin.fir.scopes.getFunctions
 import org.jetbrains.kotlin.fir.scopes.impl.originalForWrappedIntegerOperator
 import org.jetbrains.kotlin.fir.symbols.impl.FirNamedFunctionSymbol
@@ -49,7 +49,7 @@ class IntegerLiteralAndOperatorApproximationTransformer(
         return receiverType.type.scope(
             useSiteSession = session,
             scopeSession = scopeSession,
-            fakeOverrideTypeCalculator = FakeOverrideTypeCalculator.DoNothing,
+            callableCopyTypeCalculator = CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         )!!.getFunctions(name).single()
     }
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/FirImplicitBodyResolve.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/FirImplicitBodyResolve.kt
index f353bd54bc9..bd8f1110a72 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/FirImplicitBodyResolve.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/FirImplicitBodyResolve.kt
@@ -22,15 +22,14 @@ import org.jetbrains.kotlin.fir.resolve.transformers.FirTransformerBasedResolveP
 import org.jetbrains.kotlin.fir.resolve.transformers.ReturnTypeCalculator
 import org.jetbrains.kotlin.fir.resolve.transformers.ReturnTypeCalculatorForFullBodyResolve
 import org.jetbrains.kotlin.fir.resolve.transformers.contracts.runContractResolveForLocalClass
-import org.jetbrains.kotlin.fir.scopes.FakeOverrideTypeCalculator
-import org.jetbrains.kotlin.fir.scopes.fakeOverrideSubstitution
+import org.jetbrains.kotlin.fir.scopes.CallableCopyTypeCalculator
+import org.jetbrains.kotlin.fir.scopes.callableCopySubstitutionForTypeUpdater
 import org.jetbrains.kotlin.fir.scopes.impl.originalForWrappedIntegerOperator
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirSyntheticPropertySymbol
 import org.jetbrains.kotlin.fir.symbols.lazyResolveToPhase
 import org.jetbrains.kotlin.fir.types.FirImplicitTypeRef
 import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
-import org.jetbrains.kotlin.fir.types.FirTypeRef
 import org.jetbrains.kotlin.fir.types.builder.buildErrorTypeRef
 import org.jetbrains.kotlin.fir.visitors.FirTransformer
 import org.jetbrains.kotlin.util.PrivateForInline
@@ -178,7 +177,7 @@ open class ReturnTypeCalculatorWithJump(
     val designationMapForLocalClasses: Map<FirCallableDeclaration, List<FirClassLikeDeclaration>> = mapOf(),
     private val nonLocalDeclarationResolver: ReturnTypeCalculatorWithJump? = null,
 ) : ReturnTypeCalculator() {
-    override val fakeOverrideTypeCalculator: FakeOverrideTypeCalculator = FakeOverrideTypeCalculatorWithJump()
+    override val callableCopyTypeCalculator: CallableCopyTypeCalculator = CallableCopyTypeCalculatorWithJump()
 
     @OptIn(PrivateForInline::class)
     var outerBodyResolveContext: BodyResolveContext? = null
@@ -230,16 +229,16 @@ open class ReturnTypeCalculatorWithJump(
         }
 
         if (declaration.isSubstitutionOrIntersectionOverride) {
-            val fakeOverrideSubstitution = declaration.attributes.fakeOverrideSubstitution
+            val callableCopySubstitutionForTypeUpdater = declaration.attributes.callableCopySubstitutionForTypeUpdater
                 ?: return declaration.returnTypeRef as FirResolvedTypeRef
 
             // TODO: drop synchronized in KT-60385
-            synchronized(fakeOverrideSubstitution) {
-                if (declaration.attributes.fakeOverrideSubstitution == null) {
+            synchronized(callableCopySubstitutionForTypeUpdater) {
+                if (declaration.attributes.callableCopySubstitutionForTypeUpdater == null) {
                     return declaration.returnTypeRef as FirResolvedTypeRef
                 }
 
-                val (substitutor, baseSymbol) = fakeOverrideSubstitution
+                val (substitutor, baseSymbol) = callableCopySubstitutionForTypeUpdater
                 val baseDeclaration = baseSymbol.fir as FirCallableDeclaration
                 val baseReturnTypeRef = tryCalculateReturnType(baseDeclaration)
                 val baseReturnType = baseReturnTypeRef.type
@@ -251,7 +250,7 @@ open class ReturnTypeCalculatorWithJump(
                     declaration.setter?.valueParameters?.firstOrNull()?.replaceReturnTypeRef(returnType)
                 }
 
-                declaration.attributes.fakeOverrideSubstitution = null
+                declaration.attributes.callableCopySubstitutionForTypeUpdater = null
                 return returnType
             }
         }
@@ -340,7 +339,7 @@ open class ReturnTypeCalculatorWithJump(
         return newReturnTypeRef
     }
 
-    private inner class FakeOverrideTypeCalculatorWithJump : FakeOverrideTypeCalculator.AbstractFakeOverrideTypeCalculator() {
+    private inner class CallableCopyTypeCalculatorWithJump : CallableCopyTypeCalculator.AbstractCallableCopyTypeCalculator() {
         override fun FirCallableDeclaration.getResolvedTypeRef(): FirResolvedTypeRef? {
             return this@ReturnTypeCalculatorWithJump.computeReturnTypeRef(this)
         }
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/mpp/FirExpectActualMatchingContextImpl.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/mpp/FirExpectActualMatchingContextImpl.kt
index fd5d27778b4..690609239b0 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/mpp/FirExpectActualMatchingContextImpl.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/mpp/FirExpectActualMatchingContextImpl.kt
@@ -178,7 +178,7 @@ class FirExpectActualMatchingContextImpl private constructor(
         val scope = symbol.defaultType().scope(
             useSiteSession = session,
             scopeSession,
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         ) ?: return emptyList()
 
@@ -204,7 +204,7 @@ class FirExpectActualMatchingContextImpl private constructor(
         val scope = symbol.defaultType().scope(
             useSiteSession = symbol.moduleData.session,
             scopeSession,
-            FakeOverrideTypeCalculator.DoNothing,
+            CallableCopyTypeCalculator.DoNothing,
             requiredMembersPhase = FirResolvePhase.STATUS,
         ) ?: return emptyList()